87749361111 has 4 divisors (see below), whose sum is σ = 116999148152. Its totient is φ = 58499574072.

The previous prime is 87749361103. The next prime is 87749361173. The reversal of 87749361111 is 11116394778.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 87749361111 - 2³ = 87749361103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87749361611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14624893516 + ... + 14624893521.

It is an arithmetic number, because the mean of its divisors is an integer number (29249787038).

Almost surely, 2^87749361111 is an apocalyptic number.

87749361111 is a deficient number, since it is larger than the sum of its proper divisors (29249787041).

87749361111 is a wasteful number, since it uses less digits than its factorization.

87749361111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29249787040.

The product of its digits is 254016, while the sum is 48.

The spelling of 87749361111 in words is "eighty-seven billion, seven hundred forty-nine million, three hundred sixty-one thousand, one hundred eleven".